220221120221221 has 8 divisors (see below), whose sum is σ = 251694015384384. Its totient is φ = 188751408840960.

The previous prime is 220221120221161. The next prime is 220221120221237. The reversal of 220221120221221 is 122122021122022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220221120221221 - 2¹⁷ = 220221120090149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220221120221192 and 220221120221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220221120221251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795797500 + ... + 796074181.

It is an arithmetic number, because the mean of its divisors is an integer number (31461751923048).

Almost surely, 2^{220221120221221} is an apocalyptic number.

It is an amenable number.

220221120221221 is a deficient number, since it is larger than the sum of its proper divisors (31472895163163).

220221120221221 is a wasteful number, since it uses less digits than its factorization.

220221120221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591891451.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 220221120221221 its reverse (122122021122022), we get a palindrome (342343141343243).

The spelling of 220221120221221 in words is "two hundred twenty trillion, two hundred twenty-one billion, one hundred twenty million, two hundred twenty-one thousand, two hundred twenty-one".